william burns is speaking at a senate hearing in washington. three of his staff were killed in the eastern city of benghazi on september 11 of this year. four people have been killed outside a police station. protesters were demanding the release of a man held in connection with a number of recent killings believed to have been assassinations. three u.s. senators are demanding changes to a new movie about osama bin laden. they complain zero dark thirty .s misleading and inaccurate i knew you in report says the conflict has become increasingly sectarian -- a new un reports of the conflict has become increasingly sectarian. >> the opposition fighters are making territorial gains. they have managed to push into hamas as part of the offensive, taking over some villages, but the government continues to fight back, using what the united nations describes as disproportionate force. neither side is winning the war, and the secretary-general believes there is no prospect to the end of the conflict in syria. >> series begins the year in conflict and ends